Sigma 7 vs. Sigma 5 Drives on Acorn vs. Oak boards

[simmonds]

I am surprised that people are so friendly and interested. On some other forums I have been flamed for saying anything.
The lathe is still sitting in Chatsworth CA waiting for my check to clear. Should ship this week to my shop in Bozeman, MT.
As you can see, it is a somewhat funky-looking gang-tool lathe. It will be used exclusively for prototyping of small, high-precision parts.

Not sure what shape the ways are in, but the sellers did send me a video showing a minimal spindle run-out. Will have to see if is worth the effort of doing a rebuild. The old Fanuc 21i-T control apparently works, but I think a more modern control would be nice. Will have to see.

It appears to be a 3rd party conversion of a Hardinge to CNC. Does anybody recognize its provenance?

[martyscncgarage]

Looks like a Hardinge with an Accuslide gang tool attachement.
The slide clamps to the bed of the Hardinge. It has linear guides and ballscrews. All replaceable if worn.

Marty

[simmonds]

I think you are exactly right about this being a Hardinge-Accuslide-Fanuc mashup, probably done by Upgrade Technologies (later Compact Machine Systems). Not clear what make or type of servos it has: will just have to wait until it arrives.

An online search turned up an interesting history of these companies in the 90's. Here is a brochure that nicely describes their product...
https://www.sterlingmachinery.com/media ... ochure.pdf.

Also...
I read that CNC12 was available for the Acorn, but the Centroid web site board-comparison page still lists CNC11 for the Oak.

[tblough]

...I read that CNC12 was available for the Acorn, but the Centroid web site board-comparison page still lists CNC11 for the Oak.

CNC12 V4.14 is the latest version available for MPU11/OAK/ALLin1DC. This incorporates the VCP and wireless pendant although you might need some PLC changes to fully incorporate these for your specific machine. Centroid is working on merging the revision levels of the professional controllers with the Acorn and are getting very close to achieving this.